Lensless protective spectacles, goggles, and the like



Aug. 27, 1940.

L. LEHRFELD LENSLESS- PROTECTIVE sPEbTAcLEs, GOGGLES, AND THE LIKE Filed Nov. 19, 1937 INVENTOR- lo/(Ljls LGhIfEZ d/ ATTORNEYS.

Patented Aug. 27, 194i) h i UNITED STATES PATENT OFFICE LENSLESS rlw'rnc'rrvl-l srllc'rllcms,

GOGGLES, AND THE LIKE [D1118 Lehrfeld, Philadelphia, Pl. 7 Application November 19, 1937 Serial No. 175,420

2 Claims. (Cl. 2-14) This invention relates to spectacles, goggles Fig.11l'. is a vertical section on the line III-III and the like devised for the protection of the of Fig. I, likewise drawn to a larger scale.

wearer's eyes against injurious flying matter and Referring more in detail to the drawing, a conthe detrimental effects of excessive light. ventional pair of spectacles, including a frame 4 5 The primary object of the invention is to prowith temples 5 and a bridge 8, is illustrated; the

vide a novel form of lensless spectacles or goggles same being preferably, although not essentially, for protecting the eyes of workers in many inmade of any appropriate composition or subdustries and fields of labor where injury by parstance. Each lens rim I, as best shown in Figs. ticles and pieces of flying matter is likely to II a o appropriate ross-Section to deoccur. fine an inner surrounding groove 8 in which is w Another object is to provide spectacles or sprung, or otherwise secured, a metal retainer goggles of the above indicated type for use by g Preferably 01 E G SS-S l motor drivers and others which embody protec- T0 th retainer ring 9 there is securely fi tive substitutes, for conventional lens, said subthe substitute lens or P tective device of this stitutes including rectangular cells of predeterinvention. t e S e embodying a plurality of 15 mined dimensions surrounded by ns hi h vertically positioned elements or comparatively serve as effective deflectors against the ingress of Harrow metal Strips bars Whleh flying matter or excessive light rays that nortersectingly engaged horizontally y relatively mally interfere with clear i narrower corresponding bars ll of like material.

A further object is the provision of spectacles In practice t e s ll engage d w wa y in n or goggles as referred to in the preceding paraculled Slots in e bars with r spe t't graph that will filter out substantially seventye yes of the w arer; or in other words the infive percent of the dangerous rays of excessive terengaging ec n may be defined as of light, such as heat and light rays, and more parfdrmfltionus it Will be seen 2;, ticularly those commonly known as ultra-violet there e provided, multiple ap rtu es or cells n infra-red rays, i3 designed or directed at an angle to ensure A still further aim of this invention is the Clea! Vision, yet P s i g uflle nt front-t0- provision of a novel type of spectacles or goggles back depth for efiectua-lly Preventing t e enthat will absorb light in the ultra-violet and trance f foreign bodies. metal or liquid for x- :lo infra-red portion of the spectrum in suflicient ample, t0 the wearer's eyes w e p vidin sufa amounts to protect the yes from injury ficient ventilation to avoid sweating.

Another aim of the invention is to furnish More specifically. t e rt c ba s n intersect spectacles or goggles characterized by t of the horizontal bars II at right angles, said bars the safety inhering to glass lens while eliminathaving a Width or depth from front t back of ing the dangers incident to fracture of such lens, millimeters or more' In t hlustmthms the 85 as well as removing all possibility of cloudiness Ethical bars are shown as being slightly when worn under various conditions of temperawlder than the horizontal ones Whhe the ture and humidity and thereby keeping h eyes latter are downwardly inclined from back to cool and free from infiamauom front at an angle of eighteen degrees. Thus it do with the foregoing objects and incidental Will be readily understood that each cell it is 40 vantages in view, this invention essentially condefined by two vertical walls with top and sists of an eye protective device or substitute gg g z g s g gggg' gig; 3f: Tg g' fi lens preferably formed of minimum thickness in the line of normal vision. Further, it is to elements so lnterengaged as to define rectangube noted the horizontal bars H are preferably lar cells having vertical side walls with the inspaced apart by one millimeter, whereas the rv nln ne ncl wnw r in respect vertical bars it are separated by a distance of to the horizontal. two millimeters. This spacing of the bars III, II In the drawing: and the stated inclination of the latter are so Fig. I is a front-view of a pair of spectacles arranged in accordance with the dioptric sys- 5o embodying the subject-matter of this invention. tern of the eye, as to ensure the maximum area Fig. II is ,a horizontal section taken on the of vision while, at the same time absorbing, replane designated II-II in the preceding illusfleeting and dispersing the total quantity of tration, but drawn to an enlarged scale and light and heat waves in sufficient amunts to 5 looking in the direction of the arrows; and, safeguard the eyes from injury.

While there has been illustrated and described one embodiment of the invention, it is to be understood that minor changes, substitutions and the like may be made therein without departing from the spirit of said invention or the scope of the concluding claims. For instance, the multiplicity of the cells or apertures II, the depth and size thereof, may be varied as the exigencies of particular usage call for; while it will be fully apparent the depth of the apertures l3 and their angulation act as shielding targets against flying solids or injurious fluids, and.afford ample ventilation so as to prevent the accumulation of moisture tending to mar clear vision.

Having thus described my invention, I claim: 1. Protective goggles comprising a pair of cellular foraminous eye screens, a connecting nose bridge, and means for holding the goggles in front of the wearer's eyes, each said eye screen including a series of spaced horizontal thin bars with their flat faces disposed transversely to the plane of the screen for diminishing glare, reflecting heat, and deflecting flying particles of solid matter, and a series of corresponding intersecting vertical thin bars with their flate faces similarly disposed and having like properties, said latter bars projecting iorwardly beyond the plane of the flrst mentioned bars and, Jointly with the latter, defining cells effective to aircool the wearer's eyes.

. 2. Protective goggles according to claim 1, in which the horizontal bars are closely spaced unlformly and pitched at a slight angle forwardlydown, and the vertical bars are likewise spaced uniformly but by a greater interval than the transverse bars.

LOUIS LEHRFELD. 

